<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			#main{
				width: 500px;
				height: 500px;
				border: 1px solid black;
				display: flex;
				/*flex-direction: row;*/
				/*flex-wrap: wrap;*/
				/*flex-wrap: wrap-reverse;*/
				/*justify-content: flex-end;*/
				/*justify-content: center;*/
				/*align-items:center;*/
				/*align-content:center;*/
				align-items: flex-start;
			}
			
			#main div{
				height: 100px;
				width: 100px;
				flex: 1;
				appearance: none;
				
			}
			/*#a{
				order: 2;
				flex-grow: 3;
			}*/
			#b{
				/*order: 3;
				flex-grow: 1;*/
				align-self: flex-end;
			}
			/*#c{*/
				/*order: 1;*/
				/*flex-grow: 1;*/
				/*align-self: flex-end;*/
			/*}*/
			#main div:nth-of-type(1){
				align-self: flex-end;
			}
		</style>
	</head>
	<body>
		<div id="main">
			<div id="a" style="background: blue;">后盾网</div>
			<div id="b" style="background: red;">快学网</div>
			<div id="c" style="background: yellow;">后盾论坛</div>
			
		
		</div>
	</body>
</html>
